Governor.



F. 'STITZEL. GOVERNOR.

APPLICATION FILED APR. 8, 1914.

Patented Deb. 29, 19%

2 SHEETS-SHEET 1 R\ a WITNESSES N THE NORRIS PETERS PHOTO-L11HCL. WASHINGTON. D I

F. STITZ'EL.

GOVERNOR.

APPLICATION FILED APR. 6, 1914.

Patented Dec. 29, 1914.

2 SHEETS-SHEET 2.

[1V V/fN TOR PETERS :0,. PHOTO LITHI WAbH/NKVIUN. n 1

STATES PATENT orrrcn FREDERICK STITZEL, OF LO ISVILLE; KENTUCKY.

GOVERNOB- To all whom it may concern Be it known that I, FREDERICK S'yrrrznn, a citizen of the United States, residing at Louisville,;in. the countyof Jefferson and State. of Kentucky, have invented a certain I new-and useful Improvement in Governors, of which the following is a. full, clear, and ex c desc ip ion.

This invention relates to governors for steam engines, and particularly to, steam" enginesof the type having no rotary motion, such assteam pumping engines. The objecjt-of'the invention is to. provide an efiicient governor which can be applied to any engine of the type specified, and which may be settocause the engine to opc t any pr d erm n d. pee an ain: tain such speed automatically. The: invention comprises a reciprocating rodfwhich receives; motion by means, of a steam or a mechanical or other connection with the, working parts of any suitable ens n co ip r e W hJ ipivo edw d wei ghted arm through the intervention; of a peculiar pawl and; ratchet" mechanism to r late e. supply;- Q m v fl d, I

i P ceed; owto; xpla ma d a y claim.

Inthe accompanying:drawingsillustrating the invention, in the. several} figures of which like parts are similarly designated, Figure 1 is. a side, elevation. showing the invention applied to a steam pumping engine, and inwhich, the governoris operated by steam. Fig. 21s a view similar to Fig. l; but showing the governormechanlcally." op;

ela ed; F gisz-afr nt i of he. g v

ernor with one off the. bearings of; the.

weighted arm broken away. Fig. 4' is;a; sec: tion taken in; the plane of lineA B, Fig.5;

F i g. 5. is, a side elevation. and showing; the connection between the governor and the;

steamv lv g -1 and 8 rent positions of a portion of the devices forep-v erating the weighted arm and toothed disk,

the. relative positions of the weighted arm,

being shown in dotand dash-lines, Fig. 9 isa sectionshowing amodification in-which the governor is operated by steam with the aido'f a spring. Fig. 10,-is-as ection similar to Fig. 4, taken substantially through the cen erof t gor na fs w ngi l rrerating mechanism of Fig.2. Figs. 11 and. 2 are. sp ti y, a r s -Sec d a5. reat; QlYati9n..-sh!ivina a-mprlifipationqfr l Specification of Letters latent.

Application filed April 6, 1914. Serial No. 829,921".

the construction of Fig.2, wherein the re..- i

turn spring is dispensed with.

.1 is the steam cylinder, 2 thewater cylinr der, 3fthe steam chest, i the piston rod, 5

the valve rod, and 6the steampipe of an ordinary steam pump.

{The governor has a supporting frame. 7

secured to the steamchest of the engine, and this; frame has the back plate 8 with transverse bearing pieces..9 and 10', and toy these bearing-piecesissecured a front: plate-.11, as

- by" means; of screwslQ. (Fig. 3):. Slidably mountedin the bearing pieces 9,:and 10 is'a' vertical rod 13 having at. itsupper' end; a head 14 upon which ,is pivo.tal1.y1 mounted a double pawl 15 to whichis. rigidly secured an arm 16; having-a horizontallye-Xtending contact; finger 17. The pawl 1 5 :is: overbalanced atonewehd 18 and. asuitable. stop 19, is provided to limitits. downward move.-

mentg Atthe'left-hand side of, the-head- 1.4:".

is an ofi-stan'ding contact piece-2011113011, the outer-end of which is mounted a spring 21 under which the finger 17 is adapted. at timesto be frictionally heldas. wil-l be here'- inafter described. Mounted inhearingsin the platesrs r and 11 above the; pawl: 15. is a t'oothedi disk122 suitably connected-,xas by a slot. and pin "connection 23, with the; stem, 24' of an ordinary globe or other steam valve; 25 which is} interposedin; the steam pipe; 6 to.-

control the admission of steam to the-engine;

This disk22 is turned in; one driection; orthe other to.- open or close the; valveg25' by means of the, contact with it of the, ])LWlvl5. In ne. form fth nvent on, illu tr e in Figs; 1;, 4, and 5, the,lower endfoflrod. 13l

is; so constructed as to form a piston rod 26 and; piston 27;. operating; within a small, 'eyl.-. inder 28} having two steam inlets,-0ne 29- above. the piston and one 30} belowthe pis ton, and these inlets-arev connected by pipes 31 and 32,;respectively, with the-steam ports leading to the opposite ends of thesteam cylinder of: the pump, or otherengine, as sbown-'in'Fig. 1.="

Between the; front .plate 1-1 and; a. bearing; piece 33 is an arm, 34:, loosely mounted. upon. a; shaft 35 which is supported insaidyfront, plateandfbearing piece. Atthe rearrof the; arm 3i and; fixedg upon the shaft 35 is a ser-. rat a .e disk- Which. is I adapted; o e egage a pair of teeth 37 and 38 (Fig. 5) car-1 t d: y th arm, oct a aid: arm m y" e angala l-n adjusted; on; he shaiti, th) re.

lation. to the fingers next described. The outer end of the shaft 35 is screwthreaded and provided with a nut 39 (Fig. 3) so that when the required adjustment has been made, the parts may be maintained in fixed relation. Carried by the disk 36 is a pair of contact fingers 40 and 41. The finger 40 is operated upon by the contact piece 20, as the rod 13 and its head 14 carrying piece 20 move up and down due to the pulsations of the steam in cylinder 28, to move the arm. The finger 41 acts upon the finger 17 to bring it to upright or neutral position, or to cause it to be engaged by spring 21 as will be described. The arm and all of its connections are entirely separate from the reciprocating rod and its connections, the communication between them being effected by means of the parts 17, 20, 40 and 41. The upper part of the arm 34 is provided with a weight 42 preferably made in halves, one of which is fixed to the arm and the other hinged to said fixed half, as at 43, and separably connected therewith at a point opposite the hinge-joint by a bolt and nut or other connection 44. Stops 45 are provided on the halves at their hinge-joint, so as to limit the extent to which the movable half may fall away from the fixedhalf. I have found that the greatest variations per minute may be obtained by placing the shorter part of the arm and the heavier weight at the top and start the drop near the vertical and let it end somewhat below the horizon tal. Nhen the drop is slow. the momentum is not sufficient to operate the pawl, and in order to correct this difficulty the connection 44 is released and the movable half of the weight 42 is therefore free to fall away from the fixed half when the arm passes the horizontal and thereby impart the required momentum. The movable half of the weight automatically returns to position on the fixed half as the arm returns. The lower and longer part of the arm is screwthreaded throughout its length and provided with a weight 46, which may be adiusted toward the pivot to increase the velocity of the drop of the arm or away from the pivot to retard the velocity of the drop, so that the pump may be run at different speeds. This weight may be lighter than weight 42, and it may be secured in adjusted position by a jamnut 47.

In the modification shown in Fig. 9, a single steam inlet 48 only is provided in the cylinder 49, and in order to return the rod 13 when the steam is exhausted from cylinder 49, there is provided a spring 50 acting against bearing piece 9 and a collar 51 on rod 13. Aside from this the mechanism is the same as in the previously described form.

In the modification shown in Figs. 2 and 10, the bracket 7 is dispensed with and a plate 52 having an opening 53 is substituted for securing the governor to the steam chest. Furthermore, a reciprocating cam bar 54 is provided, one end of which slides in the opening 53 and the other end of which is connected by an arm 55 with the valve rod 5, whereby it is reciprocated. The cam surface of the bar 54 is adapted to engage the beveled end of rod 13 in order to move it up, and it is forced down, when the cam surface 56 is retracted, by means of a spring 57.

The modification shown in Figs. 11 and 12 is similar to that last described, the difference being that in this the cam bar 58 is double-faced and the rod 13 is perforated at 59 to allow the bar to slide through it, thus positively moving rod 13 up and down and dispensing with. the spring 57.

Referring particularly to the form of the invention illustrated in Figs. 1, 3, 4 and 5, the operation is as follows :-The engine be ing at rest, the arm 34 will be in its lowermost position and it and the pawl and associated parts will be in the position'shown in Fig. 7. When steam is turned on it will enter the left-hand end of cylinder 1 and through pipe 32 will enter the lower end of cylinder 28 to push up the piston 27 and rod 13. Contact piece 20 will therefore push up on finger 40 thus raising arm 34 until its threaded portion comes in contact with stop 60 and will hold'it there until the piston in cylinder 1 has reached the end of its righthand stroke. Then the spent steam will eX- haust from the left hand end of cylinder 1 and-lower end of cylinder 28 and live steam will enter the right-hand end of cylinder 1 and upper end of cylinder 28, and the piston in cylinder 1 will be moved back to the left and piston 27 and rod 13 will be moved down, thus releasing arm 34 so that it may drop from the position shown in Fig. 3, turning with it its shaft 35 and the disk 36 with contact fingers 40 and 41. But when the head 14 was in its uppermost position, pawl 15 was brought in contact with toothed disk 22 and'the finger 17 was released from spring 21 so that when head 14 dropped when piston 27 was pushed down, the overbalanced end 18 of pawl 15 dropped against stop 19 and the left-hand point of the pawl was up, which is the position for closing the valve.

ldefore arm 34 reaches the limit of its drop, the finger 40 will be engaged by the contact piece 20, which is rising with head 14 of rod 13. due to another upward pulsation in cylinder 28, and as the upward motion of contact piece 20 is very rapid. it will engage finger 40 with considerable force, thusthrowing up arm 34 until its screwthreaded portion strikes against stop 60 again. The drop of the arm 34 besides bringing finger 40 in contact with piece 20 igaa'ase's "also causes finger 41"to' 'engage finger 17 to bringpawl '15, to a position'where its two points are in" horiZoI '-1'ta l alin'ement. Thisv position as regards the'parts "14, 1 5,17'a'1'1d v41 which isthe-same that where thepieee '20 isfiu'sten'gaging finger '40 i's' clearly illustrated in Fi 8.- The oints of the p wl 15 being in horizontal al'inementf 'and' the head '14 'very' near I'the end ofits' up stroke, the

two points of the pawlwill come in "contact with the toothed disk 22 simultaneously as shown indotted lines in Fig: 9, *a'ndethu's fail toturn'it' in either direction.

The description in thelast precedingpar'agraph applies when'the operations of the pump and governor' are synchronous.

It' takes several strokes of the' pump "in starting "to make the operations of the pump and. governor "synchronous: In "case the pump runs too 'fast,"then;contact piece 20 will be forced up earlier during the fall of arm 34: and will throw arm up 'soo'ner than in the previous instance, and "the overbalanced end 18 of the pawl 15' will drop so as to present the left-hand point uppermost for engagement with a' tooth "on the toothed disk 22 to turn it to close thevalvefl tooth on disk 22, it will turn the disk toopen the valve. It will thus be seen that a constant speed of the engine or pump may be maintained.

' The operation of the other forms of the invention herein shown and explained is the same in all material respects asthat just set forth, except for the manner of reciproeating rod 13 as hereinbefore stated.

1 The invention has been herein shown as v applied to horizontal pumps or engines, whereas it may be applied to vertical pumps and engines equally well, and in that case the overbalanced end 18 of the doubles pointed pawl 15 may be omitted, because the arm 16 and finger 17 will act as an overbalance. These and other variations are within the principle of the invention and the scope of the claims herein.

What I claim is 1. In a governor for steam engines and the like, a steam pipe for supplying steam to said engine, a controlling valve in said pipe, a weighted arm raised by said engine and falling by gravity, and means interposed between said falling arm and the valve to move the valve in opposite'direc- 'tions to control the supply of steamto the engine.

"2. In a governor for steam engines and the -like,'-a steam pipe 'for supplying steam to said engine, a" controlling valve in said J'pip'e, a .falling arm -operated by the "engine,

"and means interposed between said arm and valve to rotate the stem of said valve in opposite'directions to control the supply *of "steam to the engine. f f f Ina governor'for steam engines and the" like, a steam pipe for supplying steam toSaidengiI'ie, a"controlling valve in said 'pip'e,'-a falling arm pivoted between its ends so as tohavf'e a shorter and 'a longer portion,

a fixed weight on its-shorter portion, and in ":IdJIlStELblG weight. onits longer portion lighter than thefixed weight, whereby the. balance of said arm may bevaried toregulate the velocity of itsfalL-and means in-, terposed between said arm and valve to 'rotate the" stem 'ofsa'id "valve in opposite directi'ons to control the supply 'ofstea t aidengine; A

In' a governor for steam engines and the like, a steam pipe' for'sup'plying steamto said engine, a controlling valve in said -pi pe,"a '-fall-ing'-arm operatedby the engine,

andmeans comprising a toothed disk and a pawl carried by a reciprocating rod interposed between said arm and valve to rotate the stem of said valve in opposite directions to control the supply of steam to said engine. A

5. In a governor for steam engines and the like, a steam pipe for supplying steam to said engine, a. controlling valvein said pipe, a pivoted and weighted arm, means comprising a rod reciproeated by the engine for op'era'tingsaid arm, a toothed disk mounted upon the stem of said valve, and a pawl carried .by said rod and operated by said arm to bring 'it into properposition when necessary to engage. said disk to rotate the stem of said valve inopposite directions tocontrol the supply of steam to said engine.

6. In a governor for steam-engines and the like, a steam pipe for supplying steam to said engine, a controlling valve in said pipe, a pivoted arm operated by the engine,

said arm having a partible weight on its shorter portion, and means interposed between said arm and valve to rotate the stem of said valve in opposite directions to con trol the supply of steam to the engine. In a governor for steam engines and the like, a steam pipe for supplying steam to said engine, a controlling valve in said pipe, a pivoted arm, means comprising a rod reciprocated by the engine foroperating said arm, a toothed disk mounted upon the stem of said valve, and a double-pointed pawl pivotally mounted upon said rod and adapted to engage said. disk;

8. In a governor for steam engines and the like, a steam pipe for supplying steam '130.

to said engine, a controlling valve in said pipe, a pivoted arm, means comprising a rod reciprocated by the engine for operating said arm, a head on the upper end of said rod, a double-pointed pawl pivotally mounted on said head and having a projecting finger adapted to be operated by said arm, a spring mounted upon said head and adapted to trictionally engage said finger to hold said pawl in one operative position, and a toothed disk mounted upon the stem of said valve and adapted to be engaged by said pawl when said rod reciprocates, whereby the stem of said valve may be rotated in opposite directions to control the supply of steam to said engine. V

9; In a governor for steam engines and the like, a steam pipe for supplying steam to, said engine, a controlling valve in said pipe, a frame forsaid governor whereby it is mounted upon said engine, an arm loosely mounted upon a shaft supported in said frame, a serratedfaced disk fixedly mounted on said shaft, a pair of contact fingers carried by said disk, teeth on said arm adapted to engage the serrations on the face of said disk, whereby the angular rela tion of the arm to said contact fingers may be varied, a reciprocating rod having a head i valve and adapted-to be engaged by said pawl, whereby it may be rotated in opposite directions to operate the valve and control the supply of steam to said engine.

In testimony whereof I, have hereunto set my hand this lth day of April, A. D. 1914;.

FREDERICK STITZEL.

Witnesses:

SAML. S.;LORD, T. E. ALLEN.

Copies oi this patent may be obtained for five cents eaeh, 'by addressing the Commissioner of latents, Washington, D. C. 

